Periodic oscillation and bistability occur in the potentials of Pt redox, pH, and sulfide ion selective electrodes when sulfide ion reacts with hydrogen peroxide in a continuous flow stirred tank reactor. The S2--H2O2 system is one of the few known and probably the simplest of the non-halogen chemical oscillators. It is the first of these systems to show bistability and the only chemical oscillator known to oscillate between acid and basic pH.
ASJC Scopus subject areas
- Colloid and Surface Chemistry